Humphry Osmond Creates the Term “Psychedelic”

Psychiatrist and researcher Humphry Osmond coined the word "psychedelic."


Osmond was searching for a term that described how LSD effects the mind. He created the word psychedelic from the Greek words for mind or soul (psyche) and show (deloun). He first used the word in a presentation he gave at the New York Academy of Sciences in 1957.1